Analyticity of extremizers to the Airy–Strichartz inequality
Analyticity of extremizers to the Airy–Strichartz inequality
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艾里-斯特里夏茨不等式的极端分析
DOI:
10.1112/blms/bdr098
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发表时间:
2010
影响因子:
0.9
通讯作者:
Shuanglin Shao
中科院分区:
文献类型:
--
作者:
D. Hundertmark;Shuanglin Shao
We prove that there exists an extremal function to the Airy–Strichartz inequality ‖e−t∂x3f‖Lt, x8(ℝ×ℝ) ⩽ C‖f‖L2(ℝ), using the linear profile decomposition. Furthermore we show that, if f is an extremizer, then f is extremely fast decaying in Fourier space and so f can be extended to be an entire function on the whole complex domain. The rapid decay of the Fourier transform of extremizers is established with a bootstrap argument which relies on a refined bilinear Airy–Strichartz estimate and a weighted Strichartz inequality.
影响因子:
2.2
作者:
Bennett J
通讯作者:
Bennett J